OCR FP1 2009 January — Question 2

Exam BoardOCR
ModuleFP1 (Further Pure Mathematics 1)
Year2009
SessionJanuary
TopicMatrices
2 The matrix \(\mathbf { A }\) is given by \(\mathbf { A } = \left( \begin{array} { l l } 2 & 0
a & 5 \end{array} \right)\). Find
  1. \(\mathbf { A } ^ { - 1 }\),
  2. \(2 \mathbf { A } - \left( \begin{array} { l l } 1 & 2
    0 & 4 \end{array} \right)\).
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